On Sep 27, 2005, at 10:01 PM, Tom Dossis wrote:
1. How do I add a catalog to a site ?
Hi Tom. Looks like you might have already worked yourself out of
this, but I'll respond for the list, at least.
If you are creating and configuring a site programmatically within a
single transaction, and adding multiple tools, some of which depend
on the others, then you typically need to do a setSite dance around
the whole thing. For instance (and there are many variations, such
as creating a site then letting event subscribers respond, but here's
a simple case):
----8<----
import zope.app.component.hooks # I believe this location is slated
for improvement
import zope.event
import zope.app.event.objectevent
def makesite(container, name):
object = MySiteFactory()
zope.event.notify(zope.app.event.objectevent.ObjectCreatedEvent
(object))
container[name] = object
sm = zope.app.component.site.LocalSiteManager(object)
zope.event.notify(zope.app.event.objectevent.ObjectCreatedEvent
(sm))
object.setSiteManager(sm)
old_site = zope.app.component.hooks.getSite()
zope.app.component.hooks.setSite(object)
try:
# XXX build your tools in the site manager here, and do
other configuration
finally:
zope.app.component.hooks.setSite(old_site)
----8<----
Moreover, you may also need direction in adding local utilities. The
general pattern is this. This also may be slated for improvement,
like the location for the getSite/setSite import above.
Given an object that is a site (i.e., has a site manager):
- get the site manager (sm = site.getSiteManager())
- get the package into which you want to add the utility (pkg = sm
['default'])
- create the utility
- fire off a creation event, as illustrated in code above
- get a name chooser for the package and ask it to choose a name for
the utility (name_in_package =
zope.app.container.interfaces.INameChooser(package).chooseName
(suggested_name, utility))
- add it to the package (pkg[name_in_container] = utility)
- make a utility registration for name and interface you are going to
look up the utility with--note this is usually *not* the
name_in_package above (reg = zope.app.utility.UtilityRegistration
(name, interface, utility))
- add the registration to the package's registration manager
(pkg.registrationManager.addRegistration(reg))
- make the registration active (reg.status =
zope.app.component.interfaces.registration.ActiveStatus)
Whew!
Hope that helps
Gary
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